Power oscillation damping capabilities of wind power plant with full converter wind turbines considering its distributed and modular characteristics

Wind power plants (WPP) are for power system stability studies often represented with aggregated models, where several wind turbines (WT) are aggregated into a single up scaled model. The advantage is a reduction in the model complexity and the computational time, and for a number of study types the accuracy of the results has been found acceptable. A large WPP is, however, both modular and distributed over a large geographical area, and feasibility of aggregating the WTs, thus, have to be reassessed when new applications are introduced for WPPs. Here, the power oscillation damping capabilities are investigated for a WPP, which includes the full layout of the collector grid and where the WTs are represented individually. With this approach, the influence of the WT control in terms of impact on oscillatory modes is assessed for the WTs individually. This will, furthermore, give input to whether park level control is possible.